吕家坨矿煤层注水技术应用与效果分析

Application and Effect Analysis of Coal Seam Water Injection Technology in Lyujiatuo Coal Mine

摘要: 为了降低5424Z工作面的粉尘浓度，提出了对5424Z工作面进行煤层静压注水的方法，利用水分充分湿润煤体，达到降尘、防瓦斯的效果。结果表明：对煤层进行2次静压注水试验后，工作面的降尘率分别为64.25%、60.04%，轨道巷的降尘率分别为17.71%、29.79%，瓦斯浓度平均下降68%、65%，工作面瓦斯释放均匀，注水效果显著。

Abstract: In order to reduce the dust concentration in 5424Z working face, a method of hydrostatic injection of coal seam for 5424Z working face is proposed, that is using moisture to wet the coal to achieve the effect of dust fall and gas control. The results show that: after two hydrostatic injection tests on the coal seam, the dust fall rate of the working face is 64.25% and 60.04% respectively, and the dust fall rate of the track way is 17.71% and 29.79% respectively. The average gas concentration is 68% and 65%; the gas release in working face is even, and the water injection effect is remarkable.